216091430376 has 64 divisors (see below), whose sum is σ = 552915763200. Its totient is φ = 70345480128.

The previous prime is 216091430351. The next prime is 216091430377. The reversal of 216091430376 is 673034190612.

It is not an unprimeable number, because it can be changed into a prime (216091430377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315385 + ... + 729143.

It is an arithmetic number, because the mean of its divisors is an integer number (8639308800).

Almost surely, 2^216091430376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216091430376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276457881600).

216091430376 is an abundant number, since it is smaller than the sum of its proper divisors (336824332824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216091430376 is a wasteful number, since it uses less digits than its factorization.

216091430376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414278 (or 414274 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The spelling of 216091430376 in words is "two hundred sixteen billion, ninety-one million, four hundred thirty thousand, three hundred seventy-six".